Calix the golden dragon loses a part of his sacred 'core' in the middle of metamorphosis. Celia was the one who took a bite out of it, mistaking it for a fruit. Calix vows to kill her in the next decade, but ends up meeting her as his maid. what could have been a dangerous cat and mouse game with Calix not recognizing a grown up Celia slowly changes as the two gradually develop feelings for each other.